Bolt and nut lock.



m. 875,438. PATENT@ DE@ 31, 19o?. G. Wi KETTEMNGEAM.

BOLT AND NUT wel.

.APPLICATION FILED MAR. 29, 1907.

GEORGE W. KETTERINGHAM, OF NATCHEZ, MISSISSPPI.

BOLT AND NUT LOCK.

Specification of Letters Patent.

Patented Dee. 31, 1907.

Application iiledMerch 29, 1907. Serial No. 365.311.

Tooll whom it' may concern:

Be it known that 1, GEORGE W. Karraa- INGHAM, a citizen of the United States, residN ing at Natchez, Adams county, and State of ltlississippi, have invented a new and useful Bolt and N ut Lock, of which the following is a specification.

The invention relates to improvements in boltand nut locks.

The object of the present invention is to improve the construction of bolt and nut locks, and to provide a simple, inexpensive and efiicient device ol great strength and durability, lesigned for use on railroads, automobiles and various other machinery, and capable of securely locking a bolt to a nut.

A further object of the invention is to provide a nut lock of this character, adapted to be readily applied to a bolt and a nut by unskilled labor, and capable of being readily unlocked and of permitting a nut to be removed from a bolt without injury either to the nut lock or to the bolt and nut.

The invention also has for an object to provide a nut loek adapted to forni a guide for enabling the nut to be readily engaged with thethreads of the bolt.

With these and other` objects in view, the invention consists in the construction and novel combination ol' parts hereinafter fully described, illustrated in the accompanying drawing, and pointed out in the claims 'hereto appended.; it being' understood that various changes iu the form, proportion, eine and minor details oll construction, within the scope of the claims, may be resorted to without departing l'roin the spirit or sacrilicing any of the advantages oi the invention.

In the drawingz-Figure 1 is a plan view of a bolt and nut lock, constructed yin accordance with this invention Fig. 2 is a longitudinal sectional view of the same. Fig. l is a perspective view of the bolt. Fig. 4 is a detail perspective view of the outer plate or catch. Fig. 5 is a similar view of the lnner or base plate.

Like numerals of reference designate corresponding parts in all the iigures of the drawing. A

1 designates va bolt, having a head 2 and provided with screw threads 3, terminating short of the adjacent end 4 ofthe bolt. The end 4 of the bolt'is polygonal and tapered and is formed by va die, or other suitable least two opposite plane faces for engagement by an outer catch or plate 7. The

outer catch or plate is detaehably interlocked with and secured to an inner or base plate 8, which lits 'llat against the inner face of the nut, and these inner and outer plates lnay be stamped out ol sheet metal, or east or otherwise formed of any suitable material.

The inner or base plate 8 is provided with a circular bolt opening 9, and it has an outwardly extending Ilange 1() at one side oi" the bolt and is provided at the opposite side with an outt Tardly projecting tongue 1v 1, the flange 1() and the tongue 11 being disposed at right angles to the plane of the body portion' oli the. inner or base plate. rl`he llange 1() is provided with a longitudinal slot 12, and is adapted to'bc engaged by a hook-shaped arm 13 olt the outer plate or,cateh, 4which has a centrally arranged oblong opening 14 to receive the tapered polygonal portion of the bolt. 'lhe arm .13 has a substantially L- sha )ed bill or engaging portion 15, which is hoolied 'into the slot 12, and the' body or outer portion. is then passed over the polygonal portion ol" the bolt. The hook-shaped arm 15 is drawniirmly into engagement with the uut, and the outer plate or member is retained iu engagement with the nut and the polygonal portion of the bolt by the tongue 11, which passes through an end` slot 16 of the outer plate or catch. After the tongue 11, which has a rounded outer edge, is passed around the slot 16, it is bent outward or clenched against the exterior.' of the outer plate or catch at the slotted end thereof. By

this construction, the bolt and. the nut are p securely locked together, and the nut is effeetually prevented from. 'accidentally .unscrewing. This locking action is obtained withoutserewing the nut tightly against an object, and. the'nut may be readily released by disengaging the llat end ol the outer plate or catch from the tongue 11, which may be readily straightened for this purpose. The

flange 10 and the tongue 11 are spaced suliieiently from the opposite faces of the nut to enable tlie'latter to be screwed on the bolt, and the nut and the nut look may beoreadily applied to the bolt with an ordinary monkey-wrench.

l-laving thus fully described iny invention,

what I elaim as new and desire to secure byl Letters Patent, isz' 1.' The combination el.` a' bolt provided with a polygonal portion, a nut, an inner or base plate havingr a bolt opening and litted against the inner face of the nut and provided at opposite sides thereof with a tongue and a flange havimor a elet, and an outer plate or eateh provided at an intermediate point with an opening to receive the polygonal portion of the bolt and having a hook-shaped arm at one ,end engaging the slotted flange of the inner or base plate and the adjacent face of the nut, said outer plate or eateh beine` provided at the other end with a Slot through which the tongue passes, Said tongue being adapted to be bent against the slotted end of 87eme I the outer plate or eateh to retain the same in. l engagement with the bolt and the nut.

2. The eoinbination with a bolt provided with a polygonal portion, and a nut, of an inner or base plate having a bolt opening and iitted against the inner faee of the nut and providedat one sidethereof with an outwardly extending slotted ilange, an outer plate or Catch provided at an intermediate point with an openingT to receive the polybonal portion ol' the bolt, and having a hookshaped arm at one end extending' through the slotted ilange of the inner or base plate and engaging the adjzu'ent faee of the nut, said inner or base plate and outer plate or poe'ite fare of the nut.

in v own, l have hereto alflixed my signature in the presente of two witnesses.

GN() NGE YV. KETTERINGHi/Yxlvl. Witneesest W. E. Voonw/xnn, (leo. J. Woonsmn.

. eateli being detaohably connected at the op-y ln testimonyl that I elaiin the foregoing as 

